Hay-rake.



No. 766,928. PATENTED AUG. 9, 1904.

F. P.BUBKHARDT.

HAY RAKE.

APPLICATION FILED FEB. 15, 1904.

H0 MODEL. 4 BHEETB-SHEET 1.

IIHIIIIIIII IIIHIIIIIHHIHHI llllllllllli magnum l0 PATENTED' AUG. 9,1904.

P. P. BURKHARDT.

HAY RAKE.

APPLICATION Hum FEB. 15, 1904.

4 SHEETS-BREE! 2.

I0 IODEL.

No. 766,928. PATENTED AUG. 9, 1904.

F. P. BURKHARDT.

HAY RAKE.

APPLICATION FILED FEB. 15, 1904.

4 SHEETS-SHEET 3.

H0 MODEL.

M66665: I M 911/ Wm No. 766,928. PATENTED AUG. 9, 1904.

' F. P. BURKHARDT.

HAY RAKE.

APPLIOATIOR FILED r1211. 15. 1904. Ho MODEL. 4 SHEETS-SHEET .4.

Patented August 9, 1904.

PATENT OFFICE.

FRANKLIN P. BURKIIARDT, OF SPPJINGFIFIJD, OHIO.

HAY-"RAKE.

SPECIFICATION forming part of Letters Patent N0. 766,928, dated August9, 1904..

Application filed February 15, 1904. Serial No. 193,678. (No model.)

To aZl whom it 7mg concern:

Be it known that I, FRANKLIN P. BURK- I-IAR'DT, a citizen of the UnitedStates, residing at Springfield, in the county of Clark and State oiOhio, have invented certain new and useful Improvements in Hay-Rakes, ofwhich the following is a specification, reference being had to theaccompanying drawings, forming a part thereof.

This invention relates to horse hay-rakes of the draft-dump type,wherein the rake-head is caused to rock about the axis of thedraftwheels by means of p awls engaging with wheelratehets andcontrolled in their movement by means of tripping mechanism under thecontrol of the operator; and it consists of a novel means for rockingthe trip-rod about its axis and simultaneously unlocking thetoggle-lever construction of the dumping connections, of a noveladjustable unlocking means for disengaging the d umping-pawls from thewheelratchets, and other features, which will be more particularlydescribed in the accompanying specification.

The objects of the invention are to provide a means for locking themechanism in operative position and to connect said means with thetrip-lever mechanism, so that the locking mechanism will be under thecontrol of the operator, and to provide an adjustable stop or limit tothe dumping movement of the head. Iattain these objects by the mechanismillustrated by the accompanying drawings and described in thespecification, in which the same reference-numerals designate like partsthroughout the various figures, in which Figure l is a plan view of ahay-rake embodying my invention. Fig. 2 is a section on line A B ofFig. 1. Fig. 3 is a sectional elevation of apart of Fig. 2 with theteeth raised. Fig. 3 is a view of Fig. 2 with the teeth raised, as inFig. 3. Fig. 4 is a perspective of a part of the dumping mechanism. Fig.5 is a detail of the axle-support, showing the manner of securing it tothe T-shaped head, also a partial View of one of the wheel-ratchets andan engaging pawl. Fig. 6 is a top plan view of Fig. 5. Fig. 7 is adetail of one of the draft connections.

The numeral 1 denotes the rake-head, hav

ing a cross-section substantially T shape in form.

E2 is the thill-trame, pivotally connected to the head by means of thehingepieces 3 in connection with the draft-bar i, the thills 5 and 6being secured to the tlIlll-TIELIDG in the usual manner, and the usualswingletree? and draft connection 8. The axlesup iorting parts 9 and 10are secured to the ends of the head, and the wheel-hubs are providedwith drivingratchets 11 of a well-known form, with which the pawls 12engage when it is desired to dump the rake. The pawls are formedintegral with the dumping-rods 13 and 14, that are designed to rock inbearings secured to the lower side of the rake-head, as shown in Fig. 4,having their outer ends journaled in the axle-supporting castings 9 and10, as shown in Flgs. 2 and 5. The inner ends of the rods are formedwith F L-shaped ends that are seated in joint-plates 1 1i and 14 in amanner permitting a limited independent movement of the two members ofti 1e rock-shaft against the action of springs 14, which are placedbeneath the L-shaped ends and operate to hold them against the upperinner surface of the joint-plates, as shown in Figs. 2, 3, and An arm 15forms part 01 one of the joint-plates, and to the end of the arm ispivoted a link 16, that slides through an opening in the lower web ofthe rake-head,

and a spiral spring 17 surrounding its outer end, operates to draw thelink through the hole and rock the dumping-rods on their axis and holdthe pawls away from the ratchet-teeth on the wheel-hubs.

18 is a small bell-crank lever pivoted on the thill-t'rame, and 19 is afoot-lever having a form similar to a double crank, which is supportedin bearings 20 and 21 on the thill-frame 2. One

of the cranks 22 extends forward and upward.

To the the rod 23, which through its connection with the bell-crank 18will operate to draw forward on the arm 15 and rock the dump-rods andthrow the pawls into engagement with the wheel-ratchets. To disengagethe pawls from the wheel-ratchets, there is provided a curved arm 25,that is held between the joint-plates connecting the two members of thedump-rod. The arm is made approximately concentric with the axis of therake-head and is provided with an adjustable block 26 at its free end,that is held in place by means of the set-screw 27. The rake-headturning on its axis during the operation of dumping the load carrieswith it the dumping-rods and arm 25, the latter moving close to thedraft-bar i in position to bring the adjustable block 26 against thesaid draftbar to disengage the pawls from the wheelratchets. To regulatethe height to which it is desired to lift the teeth to dump the load isthe function of the adjustable block 26, which may be adjusted to anyposition on the curved arm 25.

The means for holding the rake in operative position consists of thefollowing: To the rakehead is secured an arm 28, to which is pivoted oneend of a bar 29, that projects forward of the draft-frame and has afoot-piece 30 formed thereon. The bar 29 is connected intermediate itslength to an ear portion 31 by means of a link 32. The part 31 isprovided with a setscrew 33, with which the bar 29 contacts when therake is in operative position, and by means of said set-screw thepivotal point of connection between the link 32 and the bar 29 may beallowed to assume a position relative to a straight line drawn betweenthe pivotal connections of the bar 29 with the arm 28 and the link 32with the part 33 in a manner to positively lock the rake in operativeposition. When the controlling means are adjusted in this manner, it isnecessary to provide some mechanism for unlocking it before thedumping-ratchets are caused to engage with the pawls to dump the rake.To effect this purpose is one of the functions of the double-crankfoot-lever 22. As shown in Fig. 1, the footlever is provided with arearwardly-extending arm 34:, approximately parallel With the bar 29,and the laterally-extending portion 35, that is arranged to projectunder the link 32, with which it contacts when pressure is applied tothe foot-lever to trip the rake-pawls into engagement with theratchetsthat is, there will be a simultaneous unlocking of thetoggle-links holding the rake in operative position and rocking of thedump-rods to effect engagement of the dumping pawls and ratchets.

The manner of securing the axle-sup ports to the T-shaped head is shownin Figs. 5 and 6, where the part is provided with alongitudinally-extending car 11, adapted to be secured to the uppersurface of the T-shaped head, and another ear 12, adapted to be securedto the depending web l3 of said head.

Various changes may be made in the construction and location of thevarious parts without departing from the spirit of my in- Vention.

What I claim, and desire to secure by Letters Patent, is

1. In a hay-rake the combination of, ahead having teeth secured thereto,carrying-wheels journaled on stub-axles attached to said head, adraft-frame pivotally connected with said head, a rock-shaft journaledin bearings secured to said head said rock-shaft provided with means atits opposite ends for engaging with said wheels, means for causing saidrockshaft to engage with said wheels comprising a foot-lever pivotallyconnected with the draftframe, a radial arm secured to the rock-shaft, abell-crank lever pivotally connected with the draft-frame and linkconnections between the foot-lever, the radial arm, and the two arms ofthe bell-crank lever.

2. In a hay-rake the combination of, a head having teeth securedthereto, carrying-wheels journaled on stub-axles attached to said head,a draft-frame pivotally connected with said head, a rock-shaft journaledin bearings secured to said head, hubs having ratchet-teeth formingapart of said wheels, said rock-shaft provided with pawls adapted toengage with said ratchetteeth, means for causing said pawls to engagewith said teeth comprising a foot-lever pivotally connected with thedraftframe, a radial arm secured to said rockshaft, a bell-crank leverpivotally connected with the draft-frame and link connections betweenthe foot-lever, the radial lever and the two arms of the bell-cranklever.

3.- In a hay-rake the combination of, the carrying-wheels, atooth-supporting head adapted to rock about the axis of said wheels,means carried by the head for locking said head with the wheels todischarge the accumulated load, a draft-frame pivotally connected withsaid head, means for holding the head in raking position comprisingaradial arm se- I cured to the head, a bar pivotally connected at itsrear end with the radial arm and having a foot-piece at its forward end,a link connecting the bar intermediate its ends with the draft-frame, afoot-lever mounted on the draftframe, connections between saidfoot-lever and said wheels and head-locking means, and an arm on saidfoot-lever operating to raise the outer end of the combined holding-barand foot-piece.

4. In a hay-rake the combination of the carrying-wheels, atooth-supporting head adapted to rock about the axis of said wheels, adraft-frame pivotally connected to said head and including a transversedraft-bar below the rake-head, hubs having radial teeth forming a partof said wheels, a rock-shaft journaled in bearings secured to said head,a pawl on the end of said rock-shaft adapted to engage with the teeth inone of said wheel-hubs,

veaeae means for rocking said shaft in its bearings to cause said pawlsto engage with the teeth, and other means for disengaging said pawlscomprising a curved arm secured. to the shaft and. encircling thedraft-bar from below, a projection 0n the curved arm that contacts withthe draft-frame in dumping the load. and rocks the pawl-shaft in itsbearings.

5. In a hay-rake the combination of the car Tying-wheels, atooth-supporting head. adapted to rock about the axis of said wheels, adraft-frame pivotally connected to said l. Bad, and including atransverse draft-bar below the rake-head, hubs having radialteethforming a part of said wheels, a rock-shaft journaled in bearingssecured to said head, a pawl on the end of said shaft adapted to engagewith the teeth in one of said wheel-hubs, means for rocking said shaftin its hearings to cause said pawls to engage with the teeth, and othermeans for disengaging said pawls comprising a curved arm secured to theshaft and encircling the draft-bar from below, an adjustable block onthe curved arm that contacts with the draft-frame and rocks thepawl-shaft in its bearings as the head reaches the limit of its rockingmovement in dumping the load.

In witness whereof I hereto aifixiny signature in presence of twowitnesses.

FRANKLIN P. BURKI-IARDT Witnesses:

'WIIJLIAM H. Gu'riliiun, J1-., H. B. S1? tuner.

